Ben Quayle won a ten-candidate race for the Republican nomination in Arizona's third congressional district on Tuesday.

Phoenix, Arizona (CNN) – Ben Quayle, son of former Vice President Dan Quayle, doubled down Wednesday on his attack of President Obama.

Speaking to reporters a day after capturing the Republican nomination for Congress in Arizona's 3rd district, Quayle declared, "I really have about eight words to share with you, and that is: Barack Obama is the worst president in history." And he warned the Obama administration that the "counterattack starts now."

The candidate – an attorney making his first foray into politics – made national headlines for a series of campaign gaffes that included using someone else's children in a campaign mailer and denying – before offering a qualified acknowledgment – that he had blogged for a raunchy online site.

Quayle managed to change the conversation late in the race by releasing a biting ad that called President Obama the worst in history and declared he wants to go to Washington to "kick some butt."

A day after Senator John McCain walked to victory in Arizona's Republican Senate primary, his opponent J.D. Hayworth hasn't called to concede nor does he plan to. "J.D. has moved on," says Mark Sanders spokesman for the J.D. Hayworth campaign.

While it's not required, the primary season ritual has the loser call the winner to privately concede and pledge to support the ticket before making a public statement.

Apparently in this case, the candidate didn't see a point. "Once McCain went downstairs and accepted, there wasn't a need to have a conversation," Hayworth's spokesman Sanders tells CNN. He points out Hayworth did concede in public remarks he delivered after McCain's victory speech. Sanders adds, "It wasn't cantankerous."

Don't tell that to the McCain camp. A McCain aide who asked not to be named said of the snub, "Not surprised. J.D. is classless to the end."